John louis kastendike



JOHN LOUIS KASTENDIKE, OF ALBANY, NEW-YORK.

Letters Patent No. 74,228, dated February,111868.

IMPROVEMENT IN COOKING-STOVES.

dits Saget-111e maar tu in this titters prima nu mating tutti its TO ALL WHOM IT MAY CONCERN:`

Be it known that I, J. LoUIs KASTENDIKE, of the city and -county of Albany, and State of New York, have invented certain new and useful Improvements in Cooking-Stovcs; and I do hereby declare that the following is a full and exact description 'thereof` reference being had to the accompanying drawings, making part of this specication, in which- Figure 1 is a central longitudinal vertical section of my improved stove.

Figure@ is a horizontal section in plane of line :u x, fig; 1.'

Figure 3 is a side elevation of the re-grate detached.V

Figures 4 and 5, a plan and a. sectionalview of one of` the covers detached.

Likeletters of reference designate corresponding parts in all lthe figures.

. My in vention consists of a hot-air chamber surrounding the're-pot, with hot-air fines leading therefrom, provided with suitable valves for directing and regulating the escape of the` hot air, in connectionwith the smokehues which surround the nir-liuesg also in the construction and -arrangement ofV a revolving {ire-grate, and inthe manner of constructing the coversand centre-pieces, all substantially as hereinafter set forth.

In the drawings, A represents thei're-pot, surrounded by a hot-air chamber, B; C,the revolving fire-grate, and D the ash-pit beneath. Eis the main sinoke-i1ue at thetop of the stove, which divides 'at the rear into two corner lines, a a, through which, the,products ofcombustion pass to the bottom of the stove and under the oven, where they unite in a central return-flue, F, from which they escape into the smoke-pipe at the opening a, at the top of thc stove, in the ordinary manner, as shown by red arrows. When'not required for heating the oven or warming the room, the products of combustion may be permitted to pass from the main tine E through an aperture, e, vcont-rolled by a damper, directly in-to the smoke-pipe, iig. 1; The hot-air chamber B is supplied with air through openingsff, in the bottom of the stove'on each side of the ash-pit.' As the air becomes heated it rises over the top ofthe oven'H, and thence, in a course corresponding with that of the smoke', Hows throughs. ue, I, to the back of the oven, where it divides and passes through sideiiues i z', down and under the oven, and

thence into a centralreturn-fiue, J, which rconducts it to the back and top of the oven, as shown by black arrows, where it is allowed to escape through a valve, Z, into the oven, or ,through a horizontal lue or dues, mm, into a vertical Hue, K, whence it may be letvintoV a warming-oven, through suitable valves, 'n n, or into` both ovens, as required. If preferred the hot air may be let into the oven, through a suitable valve, at the bottom, and allowed to escape through valve Zinto the ue again. A portion of the `hot Vair is permitted to escape through small openings, s s, iig. Liuto thesmokeii,ue E, to aid/in the combustion of the gases generated in the fire-pot, which might otherwise -pass away unconsumed. L is a plate or door closing the front end of the return smoke tine F, through which access ishad tothe latter4 to clearit 'of the cinders thatcollect therein, which are readily 'raked into the ash-pit. W is a dust-damper, which, being opened while the grate is-rotated, allows the dust to escape into the fines with other products of combustion, instead. of into the apartment. The partition M, between-the oven and hot-air chamber, I prefer to plaster with any suitable noncondlicting material, 0, to prevent the excessive heating of the front end of the oven,

The advantages of the rst feature of my invention are as follows: The hot=air fines, by surrounding the oven, and intervening between it and the smoke-dues, serve as a space in which the'heatfrom the smoke-hues is distributed and equaliaed,'producing a more'uniform temperature in the oven than can be attained by any other i method with which I am acquainted. The hot ar itselfialso assists in heating the oven, and by letting a portion through the valve l into the oven, amost perfect ventilation thereof is obtained. It also enablesthe requisite temperature of the warmingeoven to be readily maintained, by allowing it to escape therein through the valves n n.

The grate C is constructed in the-following manner N N is an oval frame ofthe form of Vthe base of the fire-pot, provided with a number of `cross-bars, g' g, 'at a distance apart equal to about twice that between the vbars of an ordinary grate. This frame is cast inhalves, cut by a. horizontal plane, between which is arranged an axis, P, in line of the major diameter, consisting of a number Vof triangular'plates, q, arranged vertically, as shown, one ineach of the spaces between the cross-bars gg,V and connected together at their centre, as repreK sented in fig. 2. The end of cach half of theframe N is cast with an extension, r, forming boxes for the ends ofthe axis P. The halves of the frame are secured together by rings or washers, t t, which slip on over the boxes r, as shown in iig. 3. The `grate is supported by the boxes r, resting in suitable recesses formed in the ledge u ofthe plate Q, which supports the {ire-pot. One end, w, of the axis l?, extends beyond the bearings r, and is fashioned to fit in the socket of any suitably-formed handle, by which the former is revolved, in raking down there, access being had thereto through a door made for the purpose. From 4the front side ofthe lower portion of the frame N extends outward, under the plate Q, an arm, y, which is lockednp in place by a pvotcd lever, z, as represented, by which the frame Nis retained in. its proper horizontal position.

The grate isdumped by swinging out the latch e, which, releasing `the arm y, allows the frame to assume a vertical position, as 'shown in red lines, iig.1. By rotating the anis-P the triangular plates g rake down the cinderswith great facility. Y 5

Another advantage of this construction is, thatsthese plates being formed with three edges, either of which may be arranged uppermost, make the grate correspondingly durable. I do not, however, claim the grate formed of alternate rotating and raking-hars as my invention, nor the dumping-grate alone, but the two combined, with the triangular plates as described. i

Another feature of my invention Vis the construction ofthe covers R andcentrc-pieces T, which I make of two thicknesses of metal. To the under side of each cover and ccntiepiece I attach a convex portion, h, of the size of the exposed under surface of each, so as to leave a space, p, between the two. This under portion may be secured to the covers by a single rivet, j, iig. 5, at the centre, and to the centre-pieces by one or more rivets at the edge or centre, as preferred. .The centre plate L, attached to the centre-pieces, especially the back one, I provide with a hole, 7c, for' the admission of air, as shown by the arrows, iig. 1, which serves to increase the draught by rendering the combustion of the gases more perfect. This feature of my invention enables the top plate of the covers and centre-pieces to be more readily cast, requiring only simple holes, b b, for the insertion of the handle, instead of the peculiarlyf0rmed recesses that the ordinary modes of construction render neces-4 sary. The non-conducting spaces 29, to and from which the air has free access through these holes b, prevent the upper plate of the covers and centre-pieces from becoming intensely heated, and consequently the injury and loss resulting from these parts warping and cracking from unequal expansion and contraction is avoided. The auxiliary plates 7L are not injurionsly affected by these causes, as` theirv convex form permits the necessary yielding without cracking.

It is well known that the most perfect combustion of the hydrocarbon gases -generated from burning fuel is attained by supplying the flame at different distances with a' requisite amount of air. This result I accom; plish by means of-the perforations s and the aperture 7.7, in the convex plate of the back centre-piece, as before described.

What I claim as my 1nvention, and desire to secure by LettersPatent, is- I 1. The combination of the hot-air chamber B, hot-air ilues I -I m, and valves Zn, with the smoke-fines, substantially as set forth.

2. Ivalso claim the axis P, provided with the tr1angular plates or rakers q q, in combination `with the divided frame N N, arm y, and lever z, arranged a'nd operating substantially in the manner and for the purpose specified. t

In witness whereof, I have hereunto signed my name in the presence of'two subscribing Witnesses;

JOHN LOUIS KASTENDKE.

Witnesses:

Jenn A. Gonwnv, W. C. Hornung.. 

